Tom qab Chengshuo Hardware mechanical engineers tau ua tiav precision machining thiab cov qauv me me ntawm cov khoom siv hlau, peb cov khoom ua haujlwm yuav ua kom zoo dua tom qab ua cov khoom hlau raws li ib puag ncig uas cov neeg siv khoom siv hlau.
Ntau tus neeg xav txog kev kho saum npoo, thiab lawv tsuas yog xav tias nws yog qhov zoo nkauj zoo nkauj zoo li cov xim thiab hmoov txheej los ua kom cov khoom zoo nkauj dua thiab hloov xim.Qhov tseeb, kev kho saum npoo tsis yog rau kev zoo nkauj xwb.Ntau yam kev kho deg kho sab nrauv ntawm cov khoom siv hlau los ntawm kev siv cov txheej txheej nyias nyias ntawm qhov chaw.Kev kho saum npoo tsim nyog tuaj yeem pab ntau hom hlau ua tiav cov khoom tau txais kev tiv thaiv zoo dua hauv kev siv ib puag ncig (xws li kev tiv thaiv corrosion, qeeb xeb), tiv thaiv cov khoom hlau, thiab ua tiav lub hom phiaj ntawm kev ua haujlwm ntev.
Niaj hnub no peb yuav qhia rau koj txog cov khoom siv aluminium ntau lawm thiab kev kho deg, anodizing, uas Chengshuo Hardware tshwj xeeb tshaj yog cov kws tshaj lij.
Dab tsi yog anodizing?
Anodizing yog cov txheej txheem electrochemical uas hloov cov hlau nto rau hauv cov hniav, ruaj, thiab corrosion-resistant anode oxide nto.Aluminium yog qhov tsim nyog rau anodizing, txawm tias lwm yam hlau tsis muaj hlau xws li magnesium thiab titanium kuj tuaj yeem ua anodized.
Nyob rau hauv 1923, anodizing yog thawj zaug siv nyob rau hauv kev lag luam nplai los tiv thaiv aluminium Cheebtsam ntawm seaplanes los ntawm corrosion.Thaum ntxov, chromic acid anodizing (CAA) yog cov txheej txheem nyiam, qee zaum hu ua Bengough Stuart txheej txheem, raws li tau piav qhia hauv UK Defense Specification DEF STAN 03-24/3.
Tam sim no nrov kev faib tawm ntawm anodizing
Anodizing tau siv dav hauv kev lag luam rau lub sijhawm ntev.Muaj ntau txoj hauv kev los siv cov npe sib txawv, thiab muaj ntau txoj hauv kev faib tawm uas tuaj yeem ua tiav raws li hauv qab no:
Muab faib los ntawm hom tam sim no: DC anodizing;AC anodizing;Thiab pulse tam sim no anodizing, uas tuaj yeem txo lub sijhawm tsim khoom kom ua tiav qhov xav tau tuab, ua rau cov yeeb yaj kiab txheej tuab, zoo ib yam thiab ntom, thiab txhim kho corrosion kuj.
Raws li cov electrolyte, nws tuaj yeem muab faib ua sulfuric acid, oxalic acid, chromic acid, tov kua qaub, thiab xim anodic oxidation nrog sulfonic organic acids ua cov ntsiab lus tseem ceeb.Oxalic acid anodizing tau patented hauv Nyij Pooj xyoo 1923 thiab tom qab ntawd tau siv dav hauv lub teb chaws Yelemees, tshwj xeeb tshaj yog hauv kev tsim kho.Anodized aluminium oxide extrusion yog cov khoom siv hauv tsev nrov hauv xyoo 1960 thiab 1970s, tab sis tom qab ntawd tau hloov los ntawm cov khoom pheej yig dua thiab cov hmoov txheej.Ntau yam txheej txheem phosphoric acid yog ib qho ntawm cov kev tsim kho tshiab tshaj plaws hauv kev kho ua ntej ntawm txhuas qhov chaw siv rau kev sib txuas lossis pleev xim.Cov kev hloov pauv ntau yam hauv cov txheej txheem anodic oxidation siv phosphoric acid tseem tab tom hloov zuj zus.Cov qauv ntawm cov tub rog thiab cov qauv kev lag luam yog cais cov txheej txheem anodizing raws li txheej txheej txheej ntxiv rau kev txheeb xyuas cov txheej txheem chemistry.
Raws li cov khoom ntawm txheej zaj duab xis, nws tuaj yeem muab faib ua: zaj duab xis zoo tib yam, zaj duab xis tawv (thick film), ceramic zaj duab xis, ci txheej txheej, semiconductor barrier txheej, thiab lwm yam rau anodizing.
Kev faib tawm ntawm cov txheej txheem Anodizing rau cov khoom siv txhuas
Cov txheej txheem Anodizing qee zaum siv rau raug (tsis yog coated) aluminium machined lossis chemically milled qhov chaw uas xav tau kev tiv thaiv corrosion.Anodic txheej muaj xws li chromic acid (CAA), sulfuric acid (SAA), phosphoric acid, thiab boric acid sulfuric acid (BSAA) anodizing txheej txheem.Cov txheej txheem anodizing cuam tshuam nrog kev kho electrolytic ntawm cov hlau, nyob rau hauv uas ib tug ruaj khov zaj duab xis los yog txheej yog tsim nyob rau hauv cov hlau nto.Anodic coatings tuaj yeem tsim los ntawm aluminium alloys nyob rau hauv ntau yam electrolytes siv alternating tam sim no lossis ncaj qha tam sim no.
Anodizing yog tiav los ntawm immersing txhuas nyob rau hauv ib tug acidic electrolyte da dej thiab dhau tam sim no los ntawm nruab nrab.Lub cathode yog ntsia rau hauv lub tank anodizing;Aluminium ua raws li anode, tso pa oxygen ions los ntawm electrolyte thiab khi rau txhuas atoms ntawm qhov chaw ntawm qhov anodized.Yog li ntawd, anodizing yog ib qho kev tswj tau zoo heev oxidation uas txhim kho ntuj tsim.
Anodization suav nrog Hom I, Hom II, thiab Hom III.Anodizing yog txheej txheem electrolytic passivation siv los ua kom cov thickness ntawm cov txheej txheem oxide nyob rau saum npoo ntawm txhuas qhov chaw.Aluminium Cheebtsam yog anodized (li no hu ua "anodizing"), thiab tam sim no ntws ntawm lawv thiab cov cathode (feem ntau yog ib tug ca aluminium pas nrig) los ntawm cov saum toj no electrolyte (feem ntau sulfuric acid).Lub luag haujlwm tseem ceeb ntawm anodizing yog txhawm rau txhim kho corrosion, hnav tsis kam, adhesion rau xim thiab primer, thiab lwm yam
PIC los ntawm Corlee:Hom IIIanodized aluminium qhov chaw
Lub anode oxide qauv pib los ntawm ib qho txhuas substrate thiab yog tag nrho ntawm txhuas oxide.Hom alumina no tsis yog siv rau saum npoo zoo li cov xim los yog txheej, tab sis yog tag nrho nrog rau hauv qab aluminium substrate, yog li nws yuav tsis tawg los yog tev tawm.Nws muaj cov qauv uas tau txiav txim siab heev thiab tuaj yeem raug rau kev ua haujlwm thib ob xws li xim thiab sealing.
Post lub sij hawm: Dec-27-2023